linux-kernel - Re: [PATCH v17 8/8] x86/smpboot: Allow parallel bringup for SEV-ES

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Message-ID: <87y1neslhe.ffs@tglx>
Date:   Thu, 30 Mar 2023 10:15:57 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Borislav Petkov <bp@...en8.de>,
        Usama Arif <usama.arif@...edance.com>
Cc:     dwmw2@...radead.org, kim.phillips@....com, brgerst@...il.com,
        piotrgorski@...hyos.org, oleksandr@...alenko.name,
        arjan@...ux.intel.com, mingo@...hat.com,
        dave.hansen@...ux.intel.com, hpa@...or.com, x86@...nel.org,
        pbonzini@...hat.com, paulmck@...nel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        rcu@...r.kernel.org, mimoja@...oja.de, hewenliang4@...wei.com,
        thomas.lendacky@....com, seanjc@...gle.com, pmenzel@...gen.mpg.de,
        fam.zheng@...edance.com, punit.agrawal@...edance.com,
        simon.evans@...edance.com, liangma@...ngbit.com,
        gpiccoli@...lia.com, David Woodhouse <dwmw@...zon.co.uk>,
        Sabin Rapan <sabrapan@...zon.com>
Subject: Re: [PATCH v17 8/8] x86/smpboot: Allow parallel bringup for SEV-ES

On Thu, Mar 30 2023 at 02:10, Thomas Gleixner wrote:
> On Tue, Mar 28 2023 at 22:07, Borislav Petkov wrote:
>>>  void cc_set_vendor(enum cc_vendor v);
>>> +enum cc_vendor cc_get_vendor(void);
>>>  void cc_set_mask(u64 mask);
>>>  
>>>  #ifdef CONFIG_ARCH_HAS_CC_PLATFORM
>>
>> You don't need those hunks adding cc_set_vendor() anymore:
>>
>> https://git.kernel.org/tip/5ae57743f578725a5dadb6f31d7798ee55e6e967
>
> That's not really true. The series is based on the x86/apic branch as
> the prerequites are in that brnach and that commit is in x86/sev.
>
> That's an x86 maintainer issue to sort out, really.

Aside of that, this needs a wrapper when CONFIG_ARCH_HAS_CC_PLATFORM is
not set to be usable outside of CC specific code...

Thanks,

        tglx